Heat oven to 350 degrees. Grease bundt pan. Sift flour with baking soda.,In a separate bowl, cream oil with sugar until light and smooth. Beat in eggs one at a time, beating well after each addition. Fold in flour mixture. Gently fold in apples and vanilla. Mixture will be thick.,______,Five minutes before cake is done, prepare topping by combining brown sugar, milk, butter and vanilla in a sauce pan. Melt over low heat, stirring constantly until smooth. Boil until topping coats spoon, about 3 minutes, stirring the entire time.,Turn cake out onto rack while still warm. Drizzle topping on cake. Allow to cool, then re-spoon topping that has dripped off the cake. Enjoy!